/* 登录页面样式 */
.login-container {
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.login-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
  opacity: 0.3;
}

.login-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  padding: 40px;
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
}

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
  font-weight: bold;
}

.login-title {
  font-size: 24px;
  font-weight: 600;
  color: #2c3e50;
  margin: 0 0 8px 0;
}

.login-subtitle {
  color: #7f8c8d;
  font-size: 14px;
}

.login-footer {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid #e1e8ed;
}

.copyright {
  color: #7f8c8d;
  font-size: 12px;
  line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 480px) {
  .login-card {
    margin: 20px;
    padding: 30px 24px;
  }
  
  .login-title {
    font-size: 20px;
  }
}